Multiply; then use fundamental identities to simplify the expression below and determine which of the following is not equivalent.
(sin x + cos x) ^2
c. sec x + 2 sin x/sec x
e. 1+2cos (pi/2 -x) cosx
take a look at the related questions below. In particular,
ah ok, so would it be answer a?posted by Lottie
Read the question carefully. It said
which of the following is not equivalent?
Actually, both c & d are not